Does anyone have such bad joint pain in their pelvis that it's painful to walk? I had a double masectomy, 16 chemo tx over 6 months and 6 weeks of daily radiation. I'm now on tamoxifen. Not sure if this is causing my pain? I'm supposed to be on it for 10 years. I've been on it for 9 months now and had the pain for 6 months. My doctor did tests and said there is no cancer but I can't live with this much pain all the time.